都市近郊コナラ二次林の林床植生保全に関する研究

東京都・武蔵野台地における事例的研究

抄録

In this study, we analysed the relationships between the plant coverage with number of species in the herb layer of Quercus serrata stand and the trampling pressure, the area of the stand, the land use around the stand, and population around the stands in Musashino tarrace in Tokyo. The following results were obtained. 1) The trampling pressure is the major factor cause to reduce the plant coverage with number of species in the herb layer. 2) To conserve the vegetation in the herb layer with a lot of plant species, the soil hardness should be required to maintain less than 21.9mm. 3) To maintain the soil hardness less than 21.9mm, the opened stand area should be required to keep more than 140.8m² per a person living within 250m far from the stand.